Methods Patents (Class 355/77)
  • Patent number: 8982328
    Abstract: A method of measurement of at-resolution overlay offset may be implemented in a scatterometer. At least three targets are provided on a wafer, each target comprising a first marker grating and a second interleaved marker grating and each target having a different overlay bias between its first and second marker. The first and second markers are provided by subsequent lithography steps in a double patterning lithographic process. The targets are measured with a scatterometer and for each target a measured CD of at least one of the markers is determined using reconstruction. The CD of the first marker may be fixed in the reconstruction. The measured CDs and at least one of the overlay biases is used to determine an overlay result corresponding to a minimum measured CD. The overlay result may be determined by fitting a function such as a parabola to the measured CDs and the overlay biases and determining the overlay at the minimum of the fitted function.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: March 17, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Henricus Johannes Lambertus Megens, Johannes Anna Quaedackers, Christian Marinus Leewis, Peter Clement Paul Vanoppen
  • Patent number: 8982319
    Abstract: A detector to measure a property of radiation is disclosed. The detector comprises first and second luminescent uniaxial crystals each having an optic axis, the optic axis of the first uniaxial crystal being arranged such that it is substantially perpendicular to the optic axis of the second uniaxial crystal.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: March 17, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Roland Pieter Stolk, Paul Van Der Veen
  • Patent number: 8982318
    Abstract: A lithographic method, among things is disclosed. The method includes using information at least indicative of a desired shape or size of a constituent part of a device to implement the desired shape or size of the constituent part of the device, the desired shape or size being related to a measured property of a layer of material in which the constituent part of the device is to be created, at least a part of the implementation comprising determining a configuration of a plurality of individually controllable elements that would be necessary to create in a radiation beam a pattern which is sufficient to implement the desired shape or size of the constituent part of the device when creating the constituent part of the device.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: March 17, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Nikolay Nikolaevich Iosad, Cheng-Qun Gui
  • Patent number: 8982321
    Abstract: In the present invention, while conveying a subject to be exposed, when exposure on a first exposure area of the subject to be exposed is completed, the exposure being performed by using a first mask pattern group of a photomask in which a plurality of types of mask pattern groups corresponding to each exposure pattern is arranged and formed in a conveying direction of the exposure to be exposed at a predetermined interval, the photomask is moved in synchronization with a conveying speed of the exposure to be exposed and the mask pattern group is switched from the first mask pattern group to a second mask pattern group. When the switching of the mask pattern group of the photomask 11 is completed, the movement of the photomask is stopped, exposure on a second exposure area of the subject to be exposed 8 is performed by the mask pattern group.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: March 17, 2015
    Assignee: V Technology Co., Ltd.
    Inventor: Koichi Kajiyama
  • Patent number: 8982323
    Abstract: A light beam generating apparatus and method of controlling the same is provided. The light beam generating apparatus may include a light source, a beam expander collimating a light beam emitted from the light source, an optical shutter selectively transmitting a light beam transmitted through the beam expander, and a focusing lens focusing a light beam transmitted the optical shutter. The optical shutter in the light generating apparatus can selectively transmit a light beam based on on/off control of the optical shutter on a pixel-by-pixel basis. This may permit one-dimensional, two-dimensional and three-dimensional nano patterns having various periods and directions to be manufactured.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoonsun Choi, Jinhwan Kim, Hongseok Lee
  • Patent number: 8982320
    Abstract: An information display method that enables for efficient analysis and evaluation of alignment results and thereby facilitating the setting of effective alignment conditions or parameters. The alignment information display method receives as input the data of the results of processing relating to alignment measurement, receives as input information relating to the parameters of the alignment measurement, finds the information for display from the data of the results of processing based on the input parameters, and displays the found desired information for display by a display mode by which the effects on the alignment measurement become clear. Therefore, in setting the desired conditions, it is possible to easily confirm the results of analysis by the set conditions, that is, the effects of the set conditions. Therefore, a user can easily detect the optimum alignment conditions and parameters.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: March 17, 2015
    Assignee: Nikon Corporation
    Inventor: Shinichi Okita
  • Patent number: 8982428
    Abstract: A page-turning device turning a page of a book includes a turning unit and a blower. The turning unit holds the page at a departure position of the page of the book being opened and releases the holding of the page at a destination position of the page. The blower sends air above the page at the departure position to blow against the page at the destination position.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: March 17, 2015
    Assignees: Casio Computer Co., Ltd., Casio Electronics Manufacturing Co., Ltd.
    Inventor: Hirokazu Hasegawa
  • Patent number: 8982329
    Abstract: End of line effect can occur during manufacture of components using a lithographic apparatus. These end of line effects can result in line end shortening of the features being manufactured. Such line end shortening may have an adverse impact on the component being manufactured. It is therefore desirable to predict and/or monitor the line end shortening. A test pattern is provided that has two separate areas such that, as designed, when the two areas are illuminated with radiation (for example from an angle-resolved scatterometer) they result in diffused radiation with asymmetry that is equal in sign to each other, but opposite in magnitude. When the test pattern is actually manufactured, line end shortening occurs, and so the asymmetry of the two areas are not equal and opposite. From the measured asymmetry of the manufactured test pattern, the amount of line end shortening that has occurred can be estimated.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: March 17, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Maurits Van Der Schaar, Arie Jeffrey Den Boef, Richard Johannes Franciscus Van Haren, Marcus Adrianus Van De Kerkhof
  • Patent number: 8982324
    Abstract: Improved low k1 lithographic imaging is disclosed by optimizing or improving an illumination polarization condition. The polarization condition may be a pre-defined spatially varying polarization, or a spatially customized local polarization of bright illumination points based on tracking a value of a desired lithographic response. Several non-traditional polarization conditions, e.g., TM/TE polarization (with or without a central TM region), diagonal polarization, and Y+X polarization (typically for dark field illumination) are disclosed, that offer substantial imaging advantages for specific lithographic problems, especially at low k1 values. The initial polarization definition may be limited to specific fixed polarization angles.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: March 17, 2015
    Assignee: ASML Holding N.V.
    Inventor: Steven George Hansen
  • Publication number: 20150070679
    Abstract: The present invention provides a measuring apparatus for measuring a position of an alignment mark formed on a substrate and including a first mark having position information in a first direction and a second mark having position information in a second direction different from the first direction, the apparatus including a detector configured to detect an image of the alignment mark, a controller configured to control movement of a stage for holding the substrate and detection by the detector, and a processor configured to obtain a position of the alignment mark whose image is detected by the detector, wherein the controller is configured to cause the detector to detect the image of the alignment mark with the stage moving in the first direction, and cause the detector to detect the image of the alignment mark with the stage moving in the second direction.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 12, 2015
    Inventor: Tadaki MIYAZAKI
  • Publication number: 20150070681
    Abstract: In general, according to one embodiment, a pattern generating method evaluates an amount of flare generated through a mask during an EUV exposure; calculates optimal coverage of a mask pattern for enhancing uniformity of the amount of flare in an exposure region by applying an optimization algorithm; and generates a dummy pattern of the mask based upon the coverage of the mask pattern.
    Type: Application
    Filed: February 24, 2014
    Publication date: March 12, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Taiga Uno, Takaki Hashimoto
  • Publication number: 20150070672
    Abstract: According to one embodiment, a light exposure method includes irradiating light on a reflective projection light exposure mask and irradiating an object to be exposed to light with reflected light by reflecting the light by the reflective projection light exposure mask. The reflective projection light exposure mask includes a substrate and a pattern portion. The substrate has a first surface. The pattern portion has a multilayer reflective film provided on the first surface of the substrate. The pattern portion includes a plurality of protruding patterns and depression patterns. The depression patterns are provided between the plurality of protruding patterns.
    Type: Application
    Filed: January 23, 2014
    Publication date: March 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takamasa TAKAKI, Satoshi TANAKA
  • Patent number: 8976337
    Abstract: A method and an apparatus are provided to measure a position of a mark with a less measurement error caused by a variation in a wafer process condition. The mark is illuminated with light and an image of the mark is formed, via an optical system, in a light receiving surface of a sensor. The image of the mark is sensed and image data thereof is acquired by the sensor. Correction data of a fundamental frequency and a high harmonic of the image data is set based on information associated with a shape of the mark, an imaging magnification of the optical system, and an imaging area of the sensor. The image data is corrected using the correction data, and the position of the mark is calculated using the corrected image data.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: March 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Satoru Oishi
  • Patent number: 8976335
    Abstract: A lithographic apparatus arranged to transfer a pattern from a patterning device onto a substrate, the lithographic apparatus having a first object and a planar member mounted on the first object to improve thermal transfer to/from a second object.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: March 10, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Ruud Antonius Catharina Maria Beerens, Theodorus Petrus Maria Cadee
  • Publication number: 20150060688
    Abstract: The present invention relates to the field of micro electro mechanical system (MEMS), and particularly relates to a MEMS device of a two-dimensional (2D) air amplifier for electro spray ion focusing. It mainly includes original gas inlets, a gap structure, a wall structure and a center focusing groove in the axis of air amplifier. The feature of present invention is the double layers SU-8 mold fabricated by a micro machining method. Then the polydimethylsiloxane (PDMS) air amplifier is cast and bonded. In order to enhance the structure stiffness, PDMS is bonded with a glass supporting substrate. In the present invention, the fabrication method for the SU-8 mold and the PDMS casting and bonding processes are disclosed in detail so that the MEMS planar air amplifier ion focusing device can be fabricated by those skilled in the art. This fabrication method has advantages of simple process, low cost, small dimension size and easily implemented.
    Type: Application
    Filed: May 22, 2012
    Publication date: March 5, 2015
    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Helin Zou, Shuai Gao
  • Publication number: 20150064630
    Abstract: A method is disclosed to form a row of mutually spaced elongate lithography features along an axis on a substrate, for instance for use as contact electrodes for a NAND device. The method involves directing alignment of self-assemblable block copolymer (BCP) composition in a trench in a resist layer on the substrate, having the substrate as base, with an epitaxy feature in the trench to cause the ordered BCP layer to have elongate domains stretching across the trench width, substantially parallel to each other and to the substrate. The ordered BCP layer is then used as a resist to pattern the substrate. A BCP composition adapted to assemble with spaced discontinuous elongate elliptical domains is disclosed. The method may allow for sub-resolution contact arrays to be formed using UV lithography.
    Type: Application
    Filed: March 19, 2013
    Publication date: March 5, 2015
    Applicant: ASML Netherlands B.V.
    Inventors: Sander Frederik Wuister, Emiel Peeters
  • Publication number: 20150062553
    Abstract: The present invention provides a detection apparatus for detecting a position of a detection target, including an illumination optical system configured to perform dark-field illumination on a reference mark, and a detection optical system including a sensor configured to detect light from the reference mark and an optical system configured to guide the light from the reference mark to the sensor, and configured to detect a position of the reference mark in a first direction, wherein the reference mark includes one mark element in the first direction, and a width of the mark element in the first direction is set such that two edges of the mark element in the first direction are detected as one peak when the sensor detects the light from the reference mark.
    Type: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventors: Takafumi MIYAHARU, Kazuhiko MISHIMA
  • Publication number: 20150062545
    Abstract: The present invention is a pattern forming method of forming a pattern on a substrate using a block copolymer, the pattern forming method including the steps of: forming a film of a block copolymer containing at least two kinds of polymers on the substrate; heating the film of the block copolymer; irradiating the heated film of the block copolymer with ultraviolet light in an atmosphere of an inert gas; and supplying an organic solvent to the film of the block copolymer irradiated with the ultraviolet light.
    Type: Application
    Filed: March 28, 2013
    Publication date: March 5, 2015
    Applicant: Tokyo Electron Limited
    Inventors: Makoto Muramatsu, Takahiro Kitano, Tadatoshi Tomita, Keiji Tanouchi
  • Patent number: 8970822
    Abstract: A support table for a lithographic apparatus, the support table having a support section and a conditioning system, wherein the support section, the conditioning system, or both, is configured such that heat transfer to or from a substrate supported on the support table, resulting from the operation of the conditioning system, is greater in a region of the substrate adjacent an edge of the substrate than it is in a region of the substrate that is at the center of the substrate.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: March 3, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Johan Gertrudis Cornelis Kunnen, Martijn Houben, Thibault Simon Mathieu Laurent, Hendrikus Johannes Marinus Van Abeelen, Armand Rosa Jozef Dassen, Sander Catharina Reinier Derks
  • Patent number: 8970820
    Abstract: A carrier apparatus positions a chuck member above a wafer mounted on a fine movement stage, relatively moves the chuck member and the fine movement stage in a vertical direction, makes the chuck member approach a position which is a predetermined distance away from the upper surface of the wafer, makes the chuck member hold the wafer from above in a non-contact manner, and makes the chuck member holding the wafer and the fine movement stage move apart within a predetermined plane after making the chuck member holding the wafer and the fine movement stage move apart in the vertical direction. Further, the carrier apparatus loads the wafer held in a non-contact manner from above by the chuck member on the fine movement stage.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: March 3, 2015
    Assignee: Nikon Corporation
    Inventor: Yuichi Shibazaki
  • Publication number: 20150055114
    Abstract: A method for fabricating a radiation-cured structure is provided. The method includes the steps of providing a first radiation-sensitive material and applying a second radiation-sensitive material to the first radiation-sensitive material. The first radiation-sensitive material has a first sensitivity. The second radiation-sensitive material has a second sensitivity different from the first sensitivity. At least one mask is placed between at least one radiation source and the first and second radiation-sensitive materials. The mask has a plurality of substantially radiation-transparent apertures. The first and second radiation-sensitive materials are then exposed to a plurality of radiation beams through the radiation-transparent apertures in the mask to form a first construct in the first radiation-sensitive material and a second construct in the second radiation-sensitive material. The first construct and the second construct cooperate to form the radiation-cured structure.
    Type: Application
    Filed: November 4, 2014
    Publication date: February 26, 2015
    Inventors: Jeffrey A. Rock, Gerald W. Fly, Yeh-Hung Lai, Keith E. Newman, Alan J. Jacobsen, William B. Carter, Peter D. Brewer
  • Publication number: 20150055113
    Abstract: According to one embodiment, a pattern formation method includes preparing a mask pattern for interference, producing Talbot interference, and forming a pattern by blocking a part of interference light. The mask pattern for interference is arranged periodically a plurality of light transmissive portions. The Talbot interference is based on a transmitted light. The transmitted light is transmitted through the light transmissive portions by applying a light to the mask pattern for interference. The part of interference light is produced by the Talbot interference by means of a mask pattern for light blocking and applying another part of the interference light transmitted through the mask pattern for light blocking to a exposure object member.
    Type: Application
    Filed: December 3, 2013
    Publication date: February 26, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi SATO, Ryoichi INANAMI, Shinichi ITO, Satoshi TANAKA
  • Patent number: 8964165
    Abstract: The disclosure pertains to an optical apparatus, in particular for microlithography, that includes an optical module, a support structure and a connection apparatus. The connection apparatus includes at least one connection unit which includes a first connector part and a second connector part. The first connector part is connected to the optical module, and the second connector part is connected to the support structure.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: February 24, 2015
    Assignee: Carl Zeiss SMT GmbH
    Inventor: Yim-Bun Patrick Kwan
  • Publication number: 20150049324
    Abstract: The embodiments described herein relate to methods, devices, and systems for masking a substrate using a photomasking process. An adaptive photomask configured to generate a photomasking pattern in accordance with dimensions of a surface feature on substrate is described. The adaptive photomask can be used to create customized photomask patterns for individual substrates. Methods and devices described herein can be used in manufacturing processes where similar parts having slight differences due to built-in tolerances are manufactured. Methods and a devices described herein can also be used in manufacture processes involving masking of three-dimensional portions of a part. A photomasking system that includes a translational mechanism for scanning a substrate surface is described.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 19, 2015
    Applicant: Apple Inc.
    Inventor: Napthaneal Yuen Tan
  • Patent number: 8958052
    Abstract: The technology disclosed relates to improved acousto-optic deflectors (AODs). In particular, it relates to compensation for subtle effects not previously addressed by AOD designers. A shifting center of gravity is described and addressed using advanced power equalization strategies. Denser writing brushes are provided by using a two-dimensional array of beams with corrections for factors such as angle of incidence at the AOD interface.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: February 17, 2015
    Assignee: Micronic AB
    Inventor: Torbjörn Sandström
  • Patent number: 8958053
    Abstract: A lithographic apparatus comprising a source collector module including a collector, configured to collect radiation from a radiation source; an illuminator configured to condition the radiation collected by the collector and to provide a radiation beam; and a detector arrangement comprising a reflector arrangement disposed in a fixed positional relationship with respect to the illuminator, the reflector arrangement being arranged to reflect radiation from the source collector module; and a sensor arrangement disposed in a fixed positional relationship with respect to the reflector arrangement, the sensor arrangement being configured to measure at least one property of radiation reflected by the reflector, the detector arrangement being configured to determine the location of a far field position of the radiation as a function of at least one property of the radiation reflected by the reflector and measured by the sensor arrangement.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: February 17, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Michel François Hubert Klaassen, Hermanus Johannes Maria Kreuwel
  • Publication number: 20150042973
    Abstract: A fine feature formation method and apparatus provide photon induced deposition, etch and thermal or photon based treatment in an area of less than the diameter or cross section of a STED depleted laser beam. At least two STED depleted beams are directed to a reaction location on a substrate where a beam overlap region having an area smaller than the excitation portion of the beams is formed. A reactant or reactants introduced to the reaction region is excited by the combined energy of the excitation portions of the two beams, but not excited outside of the overlap region of the two excitation portions of the beams. A reactant is caused to occur only in the overlap region. The overlap region may be less that 20 nm wide, and less than 1 nm in width, to enable the formation of substrate features, or the change in the substrate, in a small area.
    Type: Application
    Filed: August 5, 2014
    Publication date: February 12, 2015
    Inventors: James Francis MACK, Stephen MOFFATT
  • Publication number: 20150044875
    Abstract: A method of forming a pattern is disclosed. First, N kinds of different photomask patterns are provided. Thereafter, the N kinds of different photomask patterns are transferred to a hard mask layer by using at least N?1 kinds of light sources with different wavelengths, so as to form a hard mask pattern, wherein one of the at least N?1 kinds of light sources with different wavelengths is a light source with a wavelength of 193 nm, and N is an integer of three or more.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 12, 2015
    Applicant: United Microelectronics Corp.
    Inventor: Yu-Cheng Tung
  • Patent number: 8953147
    Abstract: An illumination optical apparatus capable of forming a pupil intensity distribution of desired shape and illuminance and, in turn, capable of realizing illumination conditions of great variety. The apparatus has a spatial light modulation unit composed of a first spatial light modulator and a second spatial light modulator arranged in an order of incidence of light, and a distribution forming optical system to form a predetermined light intensity distribution on an illumination pupil, based on a beam having traveled via the first spatial light modulator and the second spatial light modulator. The first spatial light modulator has a plurality of first optical elements which are two-dimensionally arranged and postures of which each are individually controlled. The second spatial light modulator has a plurality of second optical elements which are two-dimensionally arranged in correspondence to the first optical elements and postures of which each are individually controlled.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: February 10, 2015
    Assignee: Nikon Corporation
    Inventor: Kouji Muramatsu
  • Patent number: 8953148
    Abstract: An exposure apparatus that forms a pattern by exposing a substrate is equipped with a first platform tower, a second platform tower installed at a predetermined distance, and an exposure main section arranged within the space between both platform towers that includes a plurality of high rigidity sections each including a high rigidity component. Accordingly, it becomes possible to use a module (a high rigidity section) of the preceding generation even when the generation changes.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: February 10, 2015
    Assignee: Nikon Corporation
    Inventor: Akimitsu Ebihara
  • Patent number: 8953145
    Abstract: An EUV (extreme ultraviolet) lithography apparatus (1) including: a housing (1a) enclosing an interior (15), at least one reflective optical element (5, 6, 8, 9, 10, 14.1 to 14.6) arranged in the interior (15), a vacuum generating unit (1b) generating a residual gas atmosphere in the interior (15), and a residual gas analyzer (18a, 18b) detecting at least one contaminating substance (17a) in the residual gas atmosphere. The residual gas analyzer (18a) has a storage device (21) having an ion trap for storing the contaminating substance (17a). Additionally, a method for detecting at least one contaminating substance by residual gas analysis of a residual gas atmosphere of an EUV lithography apparatus (1) having a housing (1a) having an interior (15), in which at least one reflective optical element (5, 6, 8, 9, 10, 14.1 to 14.6), is arranged, wherein the contaminating substance (17a) is stored in a storage device (21) in order to carry out the residual gas analysis.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: February 10, 2015
    Assignee: Carl Zeiss SMT GmbH
    Inventors: Dieter Kraus, Dirk Heinrich Ehm, Stefan-Wolfgang Schmidt
  • Patent number: 8953146
    Abstract: An exposure apparatus is provided with: a conveying device that conveys the subject to be exposed in a given direction; a spatial light modulating device having a plurality of light modulating elements, which are composed of an electro-optical crystalline material and arranged at least in one row in a direction intersecting a conveying direction of the subject to be exposed; an optical beam shaping device that limits the width of light emitted from each light modulating element in the conveying direction to a predetermined width; and a control device that on/off-controls light transmitted through the spatial light modulating device so as to generate a predetermined pattern. The light modulating element is formed tilted by a predetermined angle with respect to an axis parallel to the conveying direction. The control device shifts the optical beam shaping device in the conveying direction.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: February 10, 2015
    Assignee: V Technology Co., Ltd.
    Inventors: Michinobu Mizumura, Koichiro Fukaya, Tetsuo Ando
  • Publication number: 20150036111
    Abstract: In an exposure station, positional information of a holding member that holds a wafer is measured by a first measurement system including a measurement member, and in a measurement station positional information of the holding member that holds a wafer is measured by a second measurement system including another measurement member. An exposure apparatus has a third measurement system which can measure positional information of the holding member when the holding member is carried from the measurement station to the exposure station. A controller, coupled to the first and the second measurement systems, controls a movement of the holding member based on the positional information measured by the first measurement system in the exposure station and also controls a movement of the holding member based on the positional information measured by the second measurement system in the measurement station.
    Type: Application
    Filed: October 17, 2014
    Publication date: February 5, 2015
    Inventor: Yuichi SHIBAZAKI
  • Patent number: 8947642
    Abstract: System and methods estimate model parameters of a lithographic apparatus and control lithographic processing by a lithographic apparatus. An exposure is performed using a lithographic apparatus across a wafer. A set of predetermined wafer measurement locations is obtained. Discrete orthonormal polynomials are generated using the predetermined substrate measurement locations. The overlay errors arising from the exposure are measured at the predetermined locations to obtain overlay measurements. The estimated model parameters of the lithographic apparatus are calculated from the overlay measurements by using the discrete orthogonal polynomials as a basis function to model the overlay across the wafer. Finally, the estimated model parameters are used to control the lithographic apparatus in order to provide corrected overlay across the wafer.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: February 3, 2015
    Assignee: ASML Netherlands B.V.
    Inventor: Scott Anderson Middlebrooks
  • Patent number: 8947643
    Abstract: A method produces at least one monitor wafer for a lithographic apparatus. The monitor wafer is for use in combination with a scanning control module to periodically retrieve measurements defining a baseline from the monitor wafer, thereby determining parameter drift from the baseline. In doing this, allowance and/or correction can be to be made for the drift. The baseline is determined by initially exposing the monitor wafer(s) using the lithographic apparatus to perform multiple exposure passes on each of the monitor wafer(s). An associated lithographic apparatus is also disclosed.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: February 3, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Alexander Viktorovych Padiy, Boris Menchtchikov
  • Patent number: 8947629
    Abstract: An immersion lithographic projection apparatus having a megasonic transducer configured to clean a surface and a method of using megasonic waves through a liquid to clean a surface of an immersion lithographic projection apparatus are disclosed. A flow, desirably a radial flow, is induced in the liquid.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: February 3, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Anthonius Martinus Cornelis Petrus De Jong, Hans Jansen, Marco Koert Stavenga, Peter Franciscus Wanten, Bauke Jansen, Johannes Wilhelmus Jacobus Leonardus Cuijpers, Raymond Gerardus Marius Beeren, Kornelis Tijmen Hoekerd
  • Patent number: 8947641
    Abstract: In a lithographic apparatus, a slip of a patterning device relative to a support, the support constructed to support the patterning device, may be provided by measuring a position of the support relative to a first structure of the lithographic apparatus; measuring a position of the patterning device relative to a second structure of the lithographic apparatus; determining a correlation between the position of the patterning device and the position of the support from the measured position of the support, the measured position of the patterning device, and the mutual positions of the first and second structures; and deriving from the correlation a slip of the patterning device relative to the support. The structure may include a projection system to project a radiation beam patterned by the patterning device. The projection system may be connected to a frame, such as a metrology frame of the lithographic apparatus.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: February 3, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Johannes Onvlee, Erik Roelof Loopstra
  • Publication number: 20150029480
    Abstract: An optical system of a microlithographic projection exposure apparatus comprises at least one mirror arrangement, having a plurality of mirror elements which are adjustable independently of one another for varying an angular distribution of the light reflected by the mirror arrangement, a polarization-influencing optical arrangement, by which, for a light beam passing through during the operation of the projection exposure apparatus, different polarization states can be set via the light beam cross section, and a retarder arrangement, which is arranged upstream of the polarization-influencing optical arrangement in the light propagation direction and at least partly compensates for a disturbance of the polarization distribution that is present elsewhere in the projection exposure apparatus, wherein the polarization-influencing optical arrangement has optical components which are adjustable in their relative position with respect to one another, wherein different output polarization distributions can be produc
    Type: Application
    Filed: August 26, 2014
    Publication date: January 29, 2015
    Inventors: Frank Schlesener, Ingo Saenger
  • Publication number: 20150032002
    Abstract: Ultrasound devices and methods are described, including a repeatable ultrasound transducer probe having ultrasonic transducers and corresponding circuitry. The repeatable ultrasound transducer probe may be used individually or coupled with other instances of the repeatable ultrasound transducer probe to create a desired ultrasound device. The ultrasound devices may optionally be connected to various types of external devices to provide additional processing and image rendering functionality.
    Type: Application
    Filed: July 22, 2014
    Publication date: January 29, 2015
    Applicant: Butterfly Network, Inc.
    Inventors: Jonathan M. Rothberg, Keith G. Fife, Nevada J. Sanchez, Tyler S. Ralston, Gregory L. Charvat, Gregory Corteville
  • Publication number: 20150029484
    Abstract: The present invention provides a stage apparatus which holds a substrate, including a first moving stage, a second moving stage supported by the first moving stage, a linear motor including a coil arranged on the first moving stage, and a magnet arranged on the second moving stage in correspondence with the coil, a first channel formed in the first moving stage to supply a first refrigerant for recovering heat from the coil not to contact the coil, a cover member arranged on the first moving stage to surround the coil and be spaced apart from the coil, and a second channel formed in the cover member to supply a second refrigerant for recovering heat from the cover member not to contact the coil.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 29, 2015
    Inventors: Hiroshi KII, Nobushige KORENAGA
  • Patent number: 8941814
    Abstract: An exemplary device includes first and second portions that are movably connected together by first and second sets, respectively, of multiple blades interleaved with each other at an overlap region. When the overlap region is compressed, displacement of the first and second portions relative to each other is prevented so as to provide relatively high stiffness in first and second orthogonal directions (e.g., z- and y-directions) and relatively low stiffness in a third orthogonal direction (e.g., x-direction). The device can be used in coordination with an actuator, wherein operation of the actuator and compression of the overlap region are automated.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: January 27, 2015
    Assignee: Nikon Corporation
    Inventors: Fardad Hashemi, Christopher S. Margeson, Lorri L. Watson
  • Patent number: 8941809
    Abstract: A substrate processing apparatus includes an indexer block, an anti-reflection film processing block, a resist film processing block, a development processing block, a resist cover film processing block, a resist cover film removal block, and an interface block. An exposure device is arranged adjacent to the interface block. The interface block includes first and second inspection units. The first inspection unit inspects the state of the substrate before exposure processing, and the second inspection unit inspects the state of the substrate after exposure processing.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: January 27, 2015
    Assignee: SCREEN Semiconductor Solutions Co., Ltd.
    Inventor: Masashi Kanaoka
  • Patent number: 8941811
    Abstract: A method and apparatus for cleaning the inside of an immersion lithographic apparatus is disclosed. In particular, a liquid supply system of the lithographic apparatus may be used to introduce a cleaning fluid into a space between the projection system and the substrate table of the lithographic apparatus. Additionally or alternatively, a cleaning device may be provided on the substrate table and an ultrasonic emitter may be provided to create an ultrasonic cleaning liquid.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 27, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Hans Jansen, Johannes Jacobus Matheus Baselmans, Sjoerd Nicolaas Lambertus Donders, Christiaan Alexander Hoogendam, Jeroen Johannes Sophia Maria Mertens, Johannes Catharinus Hubertus Mulkens, Marco Koert Stavenga, Bob Streefkerk, Jan Cornelis Van Der Hoeven, Cedric Desire Grouwstra
  • Patent number: 8937704
    Abstract: In an immersion lithography apparatus, the immersion liquid is supplied and removed by a liquid supply system. The immersion lithography apparatus includes a resistivity sensor configured to monitor the electrical resistivity of the immersion liquid to monitor a potential contamination within the liquid supply system and may include a cleaner supply system configured to supply a cleaning fluid to the liquid supply system to clean at least the liquid supply system.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: January 20, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Jeroen Johannes Sophia Maria Mertens, Christiaan Alexander Hoogendam, Hans Jansen, Patricius Aloysius Jacobus Tinnemans, Leon Joseph Maria Van Den Schoor, Sjoerd Nicolaas Lambertus Donders, Bob Streefkerk
  • Patent number: 8937706
    Abstract: A device manufacturing method includes conditioning a beam of radiation using an illumination system. The conditioning includes controlling an array of individually controllable elements and associated optical components of the illumination system to convert the radiation beam into a desired illumination mode, the controlling including allocating different individually controllable elements to different parts of the illumination mode in accordance with an allocation scheme, the allocation scheme selected to provide a desired modification of one or more properties of the illumination mode, the radiation beam or both. The method also includes patterning the radiation beam with a pattern in its cross-section to form a patterned beam of radiation, and projecting the patterned radiation beam onto a target portion of a substrate.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: January 20, 2015
    Assignee: ASML Netherlands B.V.
    Inventors: Heine Melle Mulder, Johannes Jacobus Matheus Baselmans, Adrianus Franciscus Petrus Engelen, Markus Franciscus Antonius Eurlings, Hendrikus Robertus Marie Van Greevenbroek, Paul Van Der Veen
  • Patent number: 8937703
    Abstract: A liquid immersion member is disposed inside an immersion exposure apparatus and at least partly around an optical member and around an optical path of exposure light that passes through a liquid between the optical member and an object. The liquid immersion member comprises: a first member, which has a first surface, a second surface that faces a direction other than that faced by the first surface, and a plurality of holes that connects the first surface and the second surface, that recovers at least some of the liquid from the space above the object opposing the first surface via the holes; a recovery passageway, wherethrough the liquid recovered via the holes of the first member flows; and a discharge part, which separately discharges a liquid and a gas from the recovery passageway. The first member comprises a first portion and a second portion.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: January 20, 2015
    Assignee: Nikon Corporation
    Inventor: Shinji Sato
  • Publication number: 20150017397
    Abstract: The present invention provides a method of forming a detection mark from line patterns formed on a substrate, including a first step of deciding a first region for forming the detection mark on the substrate, and a second region which surrounds the first region and in which formation of the detection mark is forbidden, and a second step of projecting, onto the substrate by a projection optical system, patterns including a first cut pattern for partially cutting the line pattern in the first region to form a plurality of mark elements, and a removal pattern for removing the line pattern in the second region, and forming the detection mark including the plurality of mark elements.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 15, 2015
    Inventor: Koichiro Tsujita
  • Publication number: 20150015861
    Abstract: The present invention provides a method for calibrating an encoder which includes a scale and a light receiving unit configured to receive light reflected by the scale, and detects a change in relative position between the scale and the light receiving unit, the method comprising a measurement step of measuring a deformation amount of a surface shape of the scale, a specifying step of specifying, based on a measurement result in the measurement step, a range which includes a portion of a surface of the scale, where the deformation amount exceeds a threshold, and within which a detection value of the encoder is corrected, and a determination step of determining a correction value for correcting the detection value of the encoder within the range specified in the specifying step.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 15, 2015
    Inventors: Koichi Sentoku, Yoshinori Ohsaki, Osamu Morimoto, Takahiro Matsumoto
  • Publication number: 20150015863
    Abstract: The present invention provides a method of monitoring the operation of a radiation source fuel droplet stream generator comprising a fuel-containing capillary and a piezo-electric actuator (500). The method comprises analysing the resonance frequency spectrum of a system comprising the fuel-containing capillary and the piezo-electric actuator in particular to look for changes in the resonance frequencies of the acoustic system which may be indicative of a change in the properties of the system requiring investigation.
    Type: Application
    Filed: February 7, 2013
    Publication date: January 15, 2015
    Applicant: ASML Netherland B.V.
    Inventors: Antonius Theodorus Wilhelmus Kempen, John Frederik Dijkusman, Jan Jan Meastrom
  • Patent number: 8934081
    Abstract: An alignment method for the of patterning a work piece in a direct write machine, wherein a reference board provided with board reference features is used to coordinate calibration of a measurement station and a writing station against a common reference. An adjusted pattern is for writing on the work piece is calculated relative to the position of the reference board.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: January 13, 2015
    Assignee: Mycronic AB
    Inventors: Mikael Wahlsten, Raoul Zerne